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121 条记录 (耗时 0.038 秒)

    Method and apparatus for using a balanced mixer as a switch
    1.
    发明授权
    Method and apparatus for using a balanced mixer as a switch 失效
    使用平衡混频器作为开关的方法和装置

    公开(公告)号：US5483696A

    公开(公告)日：1996-01-09

    申请号：US188854

    申请日：1994-01-31

    申请人： Charles E. Wheatley, III ,  Tohru Izumiyama ,  Tsuyoshi Kitamura ,  Mitsunari Okazaki

    发明人： Charles E. Wheatley, III ,  Tohru Izumiyama ,  Tsuyoshi Kitamura ,  Mitsunari Okazaki

    IPC分类号： H03D7/00 ,  H03C1/54 ,  H03D7/14 ,  H04B1/26

    CPC分类号： H03D7/1433 ,  H03D7/1408 ,  H03D7/1425 ,  H03D7/1458 ,  H03C1/542 ,  H03D2200/0043

    摘要： A balanced mixer is used as a switch. In digital mode, the balanced mixer receives a digital mode analog waveform and a local oscillator (L.O.). The balanced mixer mixes the waveform and the L.O. to provide a resultant output signal. In analog mode, the L.O. is modulated to contain the communication information. No analog signal is present on the port of the mixer which received the digital mode analog waveform in digital mode. The desired output of the mixer is the modulated L.O. In order to pass the L.O. through the mixer, a DC bias is applied to one of the waveform terminals of the mixer to unbalance it. A diode attenuator is added to the output of the mixer to provide scaling of the analog mode output.

    摘要翻译： 平衡混频器用作开关。 在数字模式下，平衡混频器接收数字模拟模拟波形和本地振荡器（L.O.）。 平衡混合器混合波形和L.O. 以提供结果输出信号。 在模拟模式下，L.O. 被调制以包含通信信息。 在数字模式下接收数字模拟模拟波形的混频器端口上没有模拟信号。 混合器的期望输出是调制的L.O. 为了通过L.O. 通过混频器，将DC偏压施加到混频器的一个波形端子以使其不平衡。 二极管衰减器被添加到混频器的输出端以提供模拟模式输出的缩放。

    Balanced dual mode mixer apparatus
    2.
    发明授权
    Balanced dual mode mixer apparatus 失效
    平衡双模混频器

    公开(公告)号：US5530928A

    公开(公告)日：1996-06-25

    申请号：US446128

    申请日：1995-05-22

    申请人： Charles E. Wheatley, III ,  Tohru Izumiyama ,  Tsuyoshi Kitamura ,  Mitsunari Okazaki

    发明人： Charles E. Wheatley, III ,  Tohru Izumiyama ,  Tsuyoshi Kitamura ,  Mitsunari Okazaki

    IPC分类号： H03D7/00 ,  H03C1/54 ,  H03D7/14 ,  H04B1/26

    CPC分类号： H03D7/1433 ,  H03D7/1408 ,  H03D7/1425 ,  H03D7/1458 ,  H03C1/542 ,  H03D2200/0043

    摘要： A balanced mixer is used as a switch. In digital mode, the balanced mixer receives a digital mode analog waveform and a local oscillator (L.O.). The balanced mixer mixes the waveform and the L.O. to provide a resultant output signal. In analog mode, the L.O. is modulated to contain the communication information. No analog signal is present on the port of the mixer which received the digital mode analog waveform in digital mode. The desired output of the mixer is the modulated L.O. In order to pass the L.O. through the mixer, a DC bias is applied to one of the waveform terminals of the mixer to unbalance it. A diode attenuator is added to the output of the mixer to provide scaling of the analog mode output.

    摘要翻译： 平衡混频器用作开关。 在数字模式下，平衡混频器接收数字模拟模拟波形和本地振荡器（L.O.）。 平衡混合器混合波形和L.O. 以提供结果输出信号。 在模拟模式下，L.O. 被调制以包含通信信息。 在数字模式下接收数字模拟模拟波形的混频器端口上没有模拟信号。 混合器的期望输出是调制的L.O. 为了通过L.O. 通过混频器，将DC偏压施加到混频器的一个波形端子以使其不平衡。 二极管衰减器被添加到混频器的输出端以提供模拟模式输出的缩放。

    Method and apparatus for time-aligning transmissions from multiple base stations in a CDMA communication system
    6.
    发明授权
    Method and apparatus for time-aligning transmissions from multiple base stations in a CDMA communication system 有权
    用于在CDMA通信系统中对来自多个基站的传输进行时间调整的方法和装置

    公开(公告)号：US07903633B2

    公开(公告)日：2011-03-08

    申请号：US12196489

    申请日：2008-08-22

    申请人： Francesco Grilli ,  Charles E. Wheatley, III ,  Serge D. Willenegger ,  Parvathanathan Subrahmanya

    发明人： Francesco Grilli ,  Charles E. Wheatley, III ,  Serge D. Willenegger ,  Parvathanathan Subrahmanya

    IPC分类号： H04J3/06

    CPC分类号： H04W56/002 ,  H04B7/2668 ,  H04B2201/70702 ,  H04W56/001 ,  H04W56/0015 ,  H04W56/0045 ,  H04W92/20

    摘要： Schemes to time-align transmissions from multiple base stations to a terminal. To achieve time-alignment, differences between the arrival times of transmissions from the base stations, as observed at the terminal, are determined and provided to the system and used to adjust the timing at the base stations such that terminal-specific radio frames arrive at the terminal within a particular time window. In one scheme, a time difference between two base stations is partitioned into a frame-level time difference and a chip-level time difference. Whenever requested to perform and report time difference measurements, the terminal measures the chip-level timing for each candidate base station relative to a reference base station. Additionally, the terminal also measures the frame-level timing and includes this information in the time difference measurement only if required. Otherwise, the terminal sets the frame-level part to a predetermined value (e.g., zero).

    摘要翻译： 将来自多个基站的传输时间对齐到终端的方案。 为了实现时间对准，确定在终端观察到的来自基站的传输的到达时间之间的差异，并将其提供给系统，并用于调整基站处的定时，使得终端专用无线帧到达 终端在特定的时间窗口内。 在一个方案中，两个基站之间的时差被划分为帧级时间差和码片级时间差。 无论何时请求执行和报告时差测量，终端测量每个候选基站相对于参考基站的芯片级定时。 此外，终端还测量帧级定时，并且仅在需要时在时差测量中包括该信息。 否则，终端将帧级部分设置为预定值（例如，零）。

    Method and apparatus for adjusting power control setpoint in a wireless communication system
    7.
    发明授权
    Method and apparatus for adjusting power control setpoint in a wireless communication system 失效
    用于在无线通信系统中调整功率控制设定点的方法和装置

    公开(公告)号：US07643842B2

    公开(公告)日：2010-01-05

    申请号：US10889808

    申请日：2004-07-12

    申请人： Tao Chen ,  Jack M. Holtzman ,  Fuyun Ling ,  Keith Saints ,  Nagabhushana Sindhushayana ,  Charles E. Wheatley, III

    发明人： Tao Chen ,  Jack M. Holtzman ,  Fuyun Ling ,  Keith Saints ,  Nagabhushana Sindhushayana ,  Charles E. Wheatley, III

    IPC分类号： H04B1/16 ,  H04W52/18

    CPC分类号： H04W52/12 ,  H04L1/0051 ,  H04L1/0066 ,  H04L1/208 ,  H04W52/20 ,  H04W52/36

    摘要： Techniques to adjust the setpoint of a power control loop in a wireless communication system. The setpoint may be adjusted based on frame status indicative of erased/good decoded frames, one or more (typically soft) metrics indicative of the confidence in the decoded results, power surplus/deficit indicative of the difference between the received signal quality and the setpoint, setpoint surplus/deficit indicative of the difference between the setpoint and a threshold Eb/Nt needed for the desired level of performance, or a combination thereof. The metrics may include re-encoded symbol error rate, re-encoded power metric, modified Yamamoto metric, minimum or average LLR among decoded bits, number of decoding iterations, and possibly others. The setpoint may be adjusted in different manners and/or by different amounts depending on the above-noted factors. The techniques may be employed for forward and/or reverse links in CDMA systems.

    摘要翻译： 调整无线通信系统中功率控制回路设定值的技术。 可以基于指示擦除/良好解码帧的帧状态来调整设定点，指示解码结果的置信度的一个或多个（通常是软的）度量，指示接收到的信号质量和设定点之间的差异的功率余量/ ，表示设定值与所需性能水平所需的阈值Eb / Nt之间的差异的设定值剩余/缺失，或其组合。 度量可以包括重新编码的符号错误率，重新编码的功率度量，修改的Yamamoto度量，解码比特中的最小或平均LLR，解码迭代次数，以及可能的其他值。 可以根据上述因素以不同的方式和/或不同的量调节设定点。 这些技术可以用于CDMA系统中的前向和/或反向链路。

    Method and apparatus for generating oscillating signals
    9.
    发明授权
    Method and apparatus for generating oscillating signals 有权
    用于产生振荡信号的方法和装置

    公开(公告)号：US07592878B2

    公开(公告)日：2009-09-22

    申请号：US11696875

    申请日：2007-04-05

    申请人： Russell John Fagg ,  Charles E. Wheatley, III

    发明人： Russell John Fagg ,  Charles E. Wheatley, III

    IPC分类号： H03L1/00

    CPC分类号： H03L1/022 ,  H03B5/06 ,  H03B5/1265 ,  H03B2200/0066 ,  H03B2200/0094 ,  H03L3/00 ,  H04B2001/6908

    摘要： An apparatus for generating an oscillating signal that includes a circuit to accelerate the time in which an oscillating signal reaches a defined steady-state condition from a cold start. The apparatus includes an oscillating circuit to generate an oscillating signal; a first circuit to supply a first current to the oscillating circuit; and a second circuit to supply a second current to the oscillating circuit, wherein the first and second currents are adapted to reduce the time duration for the oscillating signal to reach a defined steady-state condition. The apparatus may be useful in communication systems that use low duty cycle pulse modulation to establish one or more communications channels, whereby the apparatus begins generating an oscillating signal at approximately the beginning of the pulse and terminates the oscillating signal at approximately the end of the pulse.

    摘要翻译： 一种用于产生振荡信号的装置，其包括用于加速从冷启动振荡信号达到确定的稳态状态的时间的电路。 该装置包括产生振荡信号的振荡电路; 向振荡电路提供第一电流的第一电路; 以及向振荡电路提供第二电流的第二电路，其中第一和第二电流适于减小振荡信号达到所定义的稳态条件的持续时间。 该装置在使用低占空比脉冲调制以建立一个或多个通信信道的通信系统中可能是有用的，由此该装置在大约开始的脉冲处开始产生振荡信号，并在脉冲的大致末端终止振荡信号 。

    Method and apparatus for forward power control in a communication system
    10.
    发明授权
    Method and apparatus for forward power control in a communication system 失效

    公开(公告)号：US07515580B2

    公开(公告)日：2009-04-07

    申请号：US10866296

    申请日：2004-06-10

    申请人： Charles E. Wheatley, III ,  Rashid A. Attar ,  Eduardo A. S. Esteves

    发明人： Charles E. Wheatley, III ,  Rashid A. Attar ,  Eduardo A. S. Esteves

    IPC分类号： H04J3/24

    CPC分类号： H04W52/24 ,  H04W52/26 ,  H04W52/267 ,  H04W52/286 ,  H04W68/00 ,  H04W72/1231

    摘要： In a data communication system capable of variable rate transmission, the data rate is determined by the largest C/I measurement of the forward link signals as measured at the Access Terminal. In one embodiment, the data transmission is scheduled based on an Access Terminal initiated forward power control, which reduces forward link rate quantization loss due to excess transmit power. The Access Terminal reports to the Access Point the excess C/I estimate for the selected rate. The Access Point then reduces its transmit power by an appropriate amount when serving that Access Terminal. In another embodiment, the data transmission is scheduled based on an Access Point initiated forward power control. The Access Point varies its transmit power over time either randomly or in synchronism with neighboring Access Points in the communication system, which enables an increase in the throughput achieved by users that receive a significant amount of interference.